"It's big and hot and heavy. I had this vest, basically, that had this tubing that ran through it... and you would plug (it) into a machine that would send cold water up into it... but the problem was the tube, I would have hanging out my costume occasionally... (and) it would be dripping fluid. It looked like I had a catheter... I was a superhero with a bladder problem." Chris Hemsworth on his efforts to stay cool in his costume on the sets of Thor and The Avengers.